Add RP2040 microcontroller subcircuit

[seveibar]

Summary

• add a reusable Microcontroller_RP2040 subcircuit adapted from abse/gameboy
• include the RP2040, QSPI flash, 12 MHz crystal, USB-C, 3.3 V regulator, decoupling, boot/run controls, status LEDs, and SWD test points
• forward connection mappings to the internal RP2040 and export the component and props from @tscircuit/common
• replace every imported EasyEDA/inline footprint with an exact, self-contained footprinter string while preserving pin positions
• add a standalone USB-C usage circuit with committed PCB, schematic, and 3D snapshots
• refresh PCB, schematic, and 3D snapshots across the full repository

Impact

Consumers can now use:

import { Microcontroller_RP2040 } from "@tscircuit/common"

<Microcontroller_RP2040 name="MCU" />

GPIO, USB, and debug pins can also be connected through the component's connections prop. The subcircuit includes its USB-C receptacle and support circuitry.

Footprint conversion

The JLCPCB/EasyEDA copper was evaluated in component-local coordinates with circuit-json-to-footprinter#12. All imported parts recover at 100% copper IoU with matching pin positions:

Part	Self-contained footprinter string	Copper IoU
RP2040 (C2040)	qfn56_thermalpad3.1mmx3.1mm_p0.4001mm_w7.8999mm_h7.9001mm_pw0.2mm_pl0.85mm	1.000
B5819W_SL (C8598)	sod123w_p3.4mm_pw0.95mm	1.000
XL_1608SURC_06 (C965799)	led_p1.498mm_pw0.8mm_ph0.8mm	1.000
X322512MSB4SI (C9002)	crystal	1.000
SKRPACE010 (C139797)	smdpushbutton	1.000
AP2112K_3_3TRG1 (C23380830)	dfn6_missing(5)_p0.95mm_w3.2001mm_pin1location(rightside,bottom)	1.000
W25Q16JVUXIQ (C2843335)	wson	1.000
TYPE_C_16PIN_2MD_073_ (C2765186)	usbcmidmount16_pinstart13	1.000

@tscircuit/footprinter is updated to ^0.0.380 for global pin1location(...) support. Orientation is now encoded in the AP2112 footprinter string instead of a separate component pcbRotation. The RP2040 base QFN orientation already places pin 1 on the left edge near the top (leftside,top), so it needs no suffix.

The RP2040's generated thermalpad hint is explicitly aliased to pin 57/GND, with a render test covering that electrical mapping.

Validation

• bun test — 5 passing tests, including a complete circuit render with zero circuit errors and the RP2040 thermal-pad mapping
• bunx tsc --noEmit
• bun run build
• bun run format:check
• bun run build:circuit — all 12 circuits built; existing supplier metadata and component-model warnings were emitted
• bun run snapshot:update — refreshed PCB, schematic, and 3D snapshots for all 12 circuits
• bun run snapshot — all snapshots match
• visually inspected the RP2040 PCB and 3D snapshots after the orientation change
• circuit-json-to-footprinter: 17 tests passing, including exact recovery of the oriented AP2112 footprint without pcbRotation

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Project	Deployment	Actions	Updated (UTC)
tscircuit-common	Ready	Preview, Comment	Jul 20, 2026 10:47pm

[seveibar]

CC @Abse2001 wdyt? i want to merge this then start improving the schematic to make it more RP2040-like- but lmk wyt

[seveibar]

@Abse2001 you probably have a better PR, but i really want to start trying to use this to build a motor controller- maybe you can replace it? lmk wyt- i'd be down to completely nix it, but the sooner i get going the sooner i think i'll figure out what features we'll need

[tscircuitbot]

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